Apparatus for discharging liquids from vessels.



D. B. MRISON.

APPARATUS FOR DISCHARGING LIQUl-'DS FROM VESSELS. APPLICATION FILED :un: 24.1915.

1,232,370, Patented July 3, 1917.

2 SHEETS-SHEET I.

D. B. MomsuN. APPARATUS FOR DISCHARGING LIQUIDSFROM VESSELS. vAPPLICATION FILED JUNE 24 |915.

1,232,370., Patented July 3, 1917.

2 SHEETS-SHEET 2.

DONALD BARNS IVIORISON, OF HARTLEPOOL, ENGLAND.

APPARATUS FOR DISCl-IARG'INGry LIQUIDS FROM VESSELS.

Application filed J une 24, 1915.

To all whom t may concern:

Be it lrnown that I, DONALD BARNs MonrsoN, a subject of the King of Great Britain and Ireland, residing at Hartlepool, in the county of Durham, England, have invented Improvements in Apparatus for Discharging Liquids from Vessels, of which the following is a specification.

This invention relates to liquid discharging apparatus of the liquid seal type, and has reference to the discharge of liquids of diiierent specific gravities from a closed vessel under a pressure which may vary between predetermined high and low limits. The object of the invention is to provide apparatus whereby the liquids can at all times be reliably and automatically discharged from the vessel.

For this purpose there is placed between the vessel and the liquid seal, a receiver which is of such capacity as will accommodate the liquid of least specific gravity and thus prevent its back flow into the vessel when theJ latter is working at a low pressure. The head of liquid in the receiver and downward passage of the seal when under the low limit of pressure is suflieient to prevent back flow into the vessel, and the head of liquid in the upward passage of the seal when under the high limit of pressure is suiicient to prevent vapor or gas from escaping from said vessel.

The invention is particularly applicable to steam regenerative accumulators in which the heating medium is exhaust steam. In apparatus of this kind it has been usual to provide an oil separator in the pipe line through which exhaust steam is supplied to the accumulator, with the result that the separator not only sets up a prejudicial back pressure but requires to be frequently cleaned. Now I have ascertained from careful tests, that irrespective of the fact that an oil separator may be used, the oil always enters the' accumulator with the steam through the water circulating and condensing devices, and when separated from the steam it mostly floats on the surface of the water in the form of scum, and if the scum is carried by a surface flow to the place of discharge, as for example in the manner described in the specification of Letters Patent No. 1,081,132 of 1913, and then passes, in accordance with my present invention, through an opening or over a Weir into a receiver Ifrom which it is automatically dis- Specication of Letters Patent.

Patented July 3,1917.

Serial No. 36,116.

charged, the effect is such that the water in the accumulator is maintained in a state of cleanliness and eflicient condensation of the oily steam and the instantaneous regeneration of pure steam is promoted, whereby a high efliciency is not only obtained in the regenerative accumulator, but also in the turbine and condenser into which the steam may flow.

The accompanying drawings illustrate partic'ular forms of my invention applied to steam regenerative accumulators.

Figure 1 represents a sectional side elevation of a steam regenerative accumulator iitted with apparatus constructed according to ,my invention, and Fig. 2 represents a plan view at the level of the liquid in the accumulator shown in Fig. 1. i

Figs. 3 and 4 are similar views to Figs. 1 and 2 and show in part a modified construction of the apparatus illustrated in Figs. 1 and 2.

With reference to Figs. 1 and 2. The accumulator is of similar construction to those illustrated in the specication of Letters Patent No. 1,081,132 of 1913, and is iitted with water circulating and condensing devices which produce a surface flow of water toward the end of the vessel at which the liquid discharging apparatus is placed. The oil and other floating matter is carried by the surface flow into the space r formed between the plate e and the end m of the vessel a, and in accordance with my invention a receiver Z), which is of such capacity as will accommodate the oily scum, is placed in communication at its upper end with the vessel a at the normal liquid level therein so that the oily scum, or other loating matter, after passing through the opening c falls by gravity into the receiver With the object of automatically maintaining in the vessel a a pressure or vacuum within a predetermined range, the lower end of the receiver b is connected to the liquid sealed tube d that is arranged concentrically within the tube f, the latter having a discharge branch h which is so disposed relative to the opening c, that the normal liquid level in the receiver b is maintained below the normal liquid level in the vessel a, the depth of the receiver 6 and the downward passage l being such as will accommodate the oily scum and prevent its back flow into the vessel a when the latter is working at a low pressure, and reduce to a minimum the amount oi oily scum remaining in the system when under a hlgh pressure, so that at no tlme can i the liquid of least' speciti'c'- grav-ity flew back with the receiver Z9. The liquid seal consists of a U-shaped tube d, the discharge end of theI tube being disposed at such a. height as will maintain under normal conditions a liquid level in the receiving chamber b below the liquid level in the vessel a and vessel n.

The receiver may be provided with covers or doors suitable for cleaning purposes.

What I claim is l.y The combination with apparatus comprising ay liquid sealed device consisting of downward and upward passages for discharging liquids ofy different specific gravities from a vessel under pressure, of a recelver placed between said vessel and sald liquid sealed device, such receiver being placed in communication with said accumulater, and a liquid sealed device consisting of downward and upward passages for the flow or oil and water from said receiver which is of such capacity as will Vaccommodate the oily scum. and. prevent its back flow into the vessely when the latter is working at a low pressure.` l

Signed at London, England this tenth day of June, 1915. DONALD BARNS MORISON.l

Witnesses H. FoTHERGrLL, SYDNEY Homer. SMITH.

Copies of thisv patent may he obtained. for ve cents each, by addressing the Commissioner of Patents, Washington, I). C. 

